The solution is λ=2.5×10^-7 m
Frequency, speed of light, and wavelength are related by the formula
c = fλ ⇒ λ =c/f
Where c = speed of light ,f = frequency, λ= wavelength
Plug in the value of c = 3 × 10^8 m/s and f = 1.2 × 10^15 Hz in the above equation and solve for the value of λ
λ = 3 × 10^8 ms^-1/1.2 × 10^15 Hz
λ=2.5×10^-7 m
The number of waves that pass a fixed point in unit time; also, the number of cycles or vibrations undergone during one unit of time by a body in periodic motion.
learn more about frequency here:
brainly.com/question/5102661
#SPJ4
